Compass
The original tool, the "crow" was invented in the 1400s, while the term "crowbar" didn't come into use until the 1700s.
The Chinese, or differential, windlass was invented in 1582.
A Chinese scientist named Chang Heng invented a machine called Dragon Jar that was used to measure earthquakes.
A compass fits this definition.
they envented a navigation tool called the magnetic compass.
they envented a navigation tool called the magnetic compass.
navigation
On Firefox, you can show the address tool on the taskbar by clicking Firefox > Options > Navigation Toolbar. Make sure there is a checkmark next to Navigation Toolbar to display the address bar.
compass
It's not necessary at all. But the fact that it can be usedas a navigational tool makes it quite useful.
he of course used a regular old compus
quin chun